Warum funktioniert das nicht?

Route:

<code>routes.MapRoute(
                "Summary",
                "{controller}/{id}",
                new { controller = "Summary", action = "Default" }
            );
</code>

Regler:

<code>public class SummaryController : Controller
    {
        public ActionResult Default(int id)
        {
            Summary summary = GetSummaryById(id);

            return View("Summary", summary);
        }
    }
</code>

URL:

<code>http://localhost:40353/Summary/107
</code>

Error:

<code>Server Error in '/' Application.

    The resource cannot be found.

    Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable.  Please review the following URL and make sure that it is spelled correctly. 

    Requested URL: /Summary/107

    Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.225
</code>

Aktualisieren:

Lassen Sie mich die Frage mit einer intelligenteren Frage aktualisieren. Wie kann ich beides haben?

<code>routes.MapRoute(
                    "Home",
                    "{controller}",
                    new { controller = "Home", action = "Default" }
                );

routes.MapRoute(
                    "Summary",
                    "{controller}/{id}",
                    new { controller = "Summary", action = "Default" }
                );
</code>